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These resistance temperature sensors with a bayonet head and thermocouple temperature sensors with a bayonet head are designed to measure temperature of solid substances, however, they may be used also to measure temperature of liquid and gaseous substances.

To fasten the temperature sensor into a point to be measured, the bayonet head that is screwed onto a spring is used. Combination of the bayonet nut, the spring and the corresponding bayonet adapter can provide higher pressure of the temperature sensor with the bayonet into the measured point or can adjust any changes in the distance between the nut and the measured point during the measurement. Maximum temperature range of sensor use is -50 to 350 °C (400 °C for a short period). The range for each design variant is reduced with a type of the temperature sensing element and the supply cable. The temperature sensors meet ingress protection from IP 50 to IP 67 according to the EN 60529 standard, as amended, depending on the lead-in cable variant.

The temperature sensors with a bayonet mount are intended for operation in chemically non-aggressive environment.


  • bayonet adapter
  • connectors


  • Manufacturer provides EU Declaration of Conformity.
  • Calibration – The final metrological inspection – comparison with standards or working instruments – is carried out for all the products. Continuity of the standards and working measuring instruments is ensured within the meaning of the Section 5 of Act no.505/1990 on metrology. The manufacturer offers a possibility to supply the sensors calibrated in SENSIT s.r.o.’s laboratory (according to requirements of the EN ISO/IEC 17025 standard, as amended) or in an Accredited laboratory.  


Sensor typeTG 55
Case endstraight, semisphere R6 or apex 120 °C
Sensing element*all types
(Pt 100, Pt 1000, Ni 1000, Ni 10000,Ni 2226=T1, NTC, PTC, KTY, TSiC, DALLAS, TC K, TC J, TC T and so on) 
Case materialstainless steel DIN 1.4301
Case diameter6 mm
Case length L60 to 200 mm
Lead-in cable variations / Temperature range
(can be limited by type of sensing element
– determine in documentation)
PVC shielded          -30 to 80 °C
PVC unshielded      -40 to 105 °C
silicone shielded      -50 to 200 °C
teflon shielded         -50 to 250 °C
with fibreglass
(with metal braiding) 0 to 400 °C 
Ingress protectionfrom IP 50 to IP 67 in according to the cable type
- in accordance with EN 60529,as amended
Material / Dimension of bayonet headnickel-plated brass /L = 16 mm, inner Ø 12.8 mm
Material / Dimension of springstainless steelDIN 1.4301
/ L = 200 mm, outer Ø 8 mm, Ø of wire 1 mm
Insulation resistance200 MΩ at 500 VDC, 25 ± 3 °C
Maximum permissible static pull on the lead-in cable1 kg
Weight0.05 kg for 70 mm housing length and 1 m cable

*) Certain technical specifications of thermocouple sensors (lead wires, IP rating, etc.) may differ with different types.
Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

TG 55 -50 °C to 350 °C (400 °C short-term)

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